WO2015030185A1 - Opening measurement instrument - Google Patents

Opening measurement instrument Download PDF

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Publication number
WO2015030185A1
WO2015030185A1 PCT/JP2014/072764 JP2014072764W WO2015030185A1 WO 2015030185 A1 WO2015030185 A1 WO 2015030185A1 JP 2014072764 W JP2014072764 W JP 2014072764W WO 2015030185 A1 WO2015030185 A1 WO 2015030185A1
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WO
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Prior art keywords
surface
opening
measurement
reference tooth
provided
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Application number
PCT/JP2014/072764
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French (fr)
Japanese (ja)
Inventor
啓幸 儀武
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国立大学法人東京医科歯科大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
    • G01B3/02Rulers or tapes with scales or marks for direct reading
    • G01B3/04Rulers or tapes with scales or marks for direct reading rigid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/103Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A61B5/1071Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring angles, e.g. using goniometers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00Dental auxiliary appliances
    • A61C19/04Measuring instruments specially adapted for dentistry
    • A61C19/045Measuring instruments specially adapted for dentistry for recording mandibular movement, e.g. face bows
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
    • G01B3/46Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
    • G01B3/50Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable of limit-gauge type, i.e. "go/no-go"

Abstract

Provided is an opening measurement instrument which exhibits excellent instrument stability during measurement, and excellent measurement accuracy and reproducibility thereof. This opening measurement instrument is provided with: an engagement part which measures an opening amount between an upper jaw and a lower jaw, and which engages with first reference teeth in one of the jaws; a measurement surface which, while the engagement part is in a state of being engaged with the first reference teeth, is brought into contact with second reference teeth in the other jaw; and a first scale which is provided to the measurement surface, and which indicates the distance from the engagement part. The opening measurement instrument is preferably further provided with a second scale which is provided to the measurement surface, and which indicates the position of a direction orthogonal to the direction in which the first scale is provided. The measurement surface is preferably configured from a curved surface in which the measurement surface between the engagement part and a prescribed point of the measurement surface bulges with respect to a flat surface connecting the engagement part and the prescribed point of the measurement surface. Furthermore, the curved surface is preferably provided with a section having a curvature which increases as the distance from the engagement part increases.

Description

Opening instrument

The present invention relates to opening meter.

Temporomandibular joint disease, but to a wide range of development from child to adult, now, it is rapidly increasing in the heart of the young people. One of the main symptoms of TMD is trismus, Therefore, as a method of treating temporomandibular disorder, for example, Patent Document 1, an opening training used for rehabilitation to restore opening feature vessel is disclosed.

Further, as a test item for the treatment of TMD, the measurement of the amount of opening is performed. That is, the measurement of the treatment and the opening amount of the aperture exerciser is to be performed together. On the other hand, the measurement of the amount of opening is an essential inspection items are also in the dental practice of day-to-day not only in the treatment of temporomandibular joint disease. Therefore, it is required to be simple and reliable to.

The opening measuring device for measuring the amount of opening, conventionally, has a shape like a triangle ruler, having a scale along the two sides are used. It is also known design of dental ruler for use in the opening of the measurement of the upper and lower teeth (Patent Document 2).

Patent No. 5004291 Publication Design Registration No. 1369820 JP

However, the opening instrument, its use is not clear, for example, there is no clear criterion whether measures which distance against any site. Further, the dental ruler, although when reading the scale against the insertion or outside portion to the inside portion of the teeth width diameter, that there is no clear standard for the measurement is the same. Thus, the opening meter and the dental ruler, because it can not be said that can be stably measured by fixed appliances at the time of measurement is not stable, the reproducibility of the measurement accuracy and measurement is lowered .

The present invention has been made in view of the above circumstances, and an object thereof is to provide an opening measuring instrument which is excellent in stability and measurement accuracy and reproducibility of the measurement time of the instrument.

The present inventors have found that in the measurement of the opening amount set teeth as a reference for measurement, let includes a portion to be secured to the tooth in opening instrument, by a fulcrum at the time of measurement that tooth, appropriately opening It found to be able to measure the amount, and have completed the present invention. More specifically, the present invention provides the following.

(1) an opening measuring device for measuring the amount of opening of the upper and lower jaws, and a securing portion secured to the first reference teeth in one jaw, engaging the locking portion is in the first reference tooth a measurement plane second reference tooth contact in the other jaw in the locked state, provided on the measurement surface, an opening measuring device and a first scale showing the distance from the locking portion.

(2) the provided measurement surface, an opening measuring instrument according to further comprising (1) a second scale indicating the position related to the direction orthogonal to the direction in which the first scale is provided.

(3) opening measuring instrument according to further comprising a third scale showing the front sliding amount of the first reference tooth for said second reference tooth (1) or (2).

(4) the measurement surface, the measurement surface between the position away from the locking portion of the measuring surface and the locking portion is, with respect to a plane connecting the said position of the measuring surface and the locking portion opening measuring instrument according to configured (1) to (3) by bulging curved Te.

(5) curvature of the curved surface, opening measuring instrument according to a (4) a larger portion with distance from the locking portion.

(6) the locking portion, the first reference tooth and the first reference tooth contact surface that abuts, recessed than the first reference tooth contact surface at least on one side of the first reference tooth contact surface opening measuring instrument according to any one of comprising a concave surface is formed, the (1) to (5).

(7) further comprising a pair of gripping surfaces disposed across the measuring surface, the pair of gripping surfaces, the width of the second graduation in the measuring surface is arranged in a width smaller than the width provided opening measuring instrument according to any one of provided with a narrow surface (1) to (6).

According to the present invention, it is excellent in stability and measurement accuracy and reproducibility of the measurement time of the instrument.

It is a perspective view of an aperture measuring apparatus according to Embodiment 1 of the present invention. The aperture measuring apparatus according to Embodiment 1 of the present invention is a side view showing. It is a front view of an aperture measuring apparatus according to Embodiment 1 of the present invention. Upper and lower jaw is a diagram showing a state where the opening. Exemplary is a diagram showing a state of use of the aperture measuring apparatus 10 of the embodiment 1, the engaging portion of the opening meter 10 is engaged with the first reference tooth in Figure 4, the opening meter second reference tooth in Figure 4 the measuring surface of 10 showing the contact state. Exemplary is a diagram showing a state of use of the aperture measuring apparatus 10 of the embodiment 1, the engaging portion of the opening meter 10 is engaged with the first reference tooth in Figure 4, the opening meter second reference tooth in Figure 4 a view showing the contact with the measuring surface of 10 is a diagram showing that there is no lateral displacement of the lower jaw. Exemplary is a diagram showing a state of use of the aperture measuring apparatus 10 of the embodiment 1, the engaging portion of the opening meter 10 is engaged with the first reference tooth in Figure 4, the opening meter second reference tooth in Figure 4 a view showing the contact with the measuring surface of 10 is a diagram showing that there is a lateral displacement of the lower jaw. It is a side view of an aperture measuring device 10A according to the second embodiment of the present invention. It is a diagram showing a state of use of the aperture measuring apparatus 10A of the second embodiment, a diagram in which the first reference tooth shows the state before sliding forward relative to the second reference tooth, a state after the sliding.

Hereinafter, the preferred embodiments of the opening measuring instrument of the present invention will be described with reference to the drawings.
Opening meter 10 of the first embodiment is used when measuring the amount of opening of the upper and lower jaws. More specifically, the opening meter 10, when measuring the distance between the mandibular front teeth and the maxillary front teeth (first reference tooth 21 which will be described later) (second reference tooth 31 to be described later), the opening amount used (see FIG. 5).
The opening measuring instrument 10, as shown in FIGS. 1 and 2, the cross section having a columnar shape of a substantially fan-shaped.
Opening meter 10 of the first embodiment, as shown in FIGS. 1-3, a locking portion 11, the measurement surface 12, a first scale 13, a second scale 14, the reference line 16, the pair gripping and a surface 15.
The locking portion 11 is provided at one end in the circumferential direction LD of the curved surface portion in the opening meter 10. The locking portion 11, as shown in FIGS. 1-3, comprises a first reference tooth contact surface 111, and a concave 112.

The first reference tooth contact surface 111 is disposed at the central portion in the width direction WD of the engaging portion 11.
Concave 112, as shown in FIGS. 1-3, they are arranged on both sides in the width direction WD of the first reference tooth contact surface 111. The concave surface 112 is recessed than the first reference tooth contact surface 111.

Measurement surface 12, as shown in FIG. 1 and 2, is provided in the curved portion in the opening meter 10. Measurement surface 12, as shown in FIG. 2, the measurement surface 12 between the predetermined portion 121 of the engaging portion 11 measurement surface (away from the locking portion 11 of the measurement surface 12 position), the engagement portion 11 and constituted by bulging curved with respect to a plane F that connects the predetermined portion 121 of the measurement surface. Although not shown only one place in FIG. 2, in the embodiment 1, a predetermined portion 121 of the measuring surface, in the measuring plane 12, at the time of measurement, all of the second reference tooth 31 to be described later abuts locations the say. Further, more specifically, the measurement surface 12 is constituted by a curved surface where the curvature increases with distance from the locking unit 11.

The first scale 13, as shown in FIG. 1 and 2, is provided on the measurement surface 12. The first scale 13 toward the circumferential direction LD of the measurement surface 12 from the locking portion 11 at predetermined intervals, are provided in the width direction WD. The first scale 13 displays the distance from the engaging portion 11. Here, the distance from the engaging portion 11, indicates the linear distance from the locking portion 11 (first reference tooth contact surface 111) to a point where the first graduation 13 is attached, the plane F as shown in FIG. 2 is the distance of the above. In Embodiment 1, the first scale 13, 10 mm spacing distance from the locking portion 11 to 30 mm, then are labeled with 5mm intervals.
The second scale 14, as shown in FIG. 1 and 3 are provided at 1mm intervals in the width direction WD orthogonal to the circumferential direction LD of the measurement surface 12. The second scale 14 indicates the position relative to the direction perpendicular to the direction in which the first scale 13 is provided. In the first embodiment, the second scale 14 is provided corresponding to each of the first scale 13.
Reference line 16 is disposed at the center in the width direction WD in the measurement surface 12, extending in the circumferential direction LD of the measurement surface 12. The reference line 16 is a reference position for measuring the amount of opening by the opening meter 10.

A pair of gripping surface 15, as shown in FIGS. 1-3, are arranged across the surface (12). Gripping surface 15, as shown in FIG. 2, it has a substantially fan-shape in the width direction WD of the measurement surface 12. In the first embodiment, the gripping surface 15, as shown in FIG. 1 and 2, it includes a wide surface 152, a narrow surface 151, a coupling surface portion 153, a.
Wide surface portion 152 is provided continuously to the measuring surface 12 is positioned perpendicular to the surface (12). That is, the distance between the pair of the wide surface 152 (width) is equal to the length of the width direction WD of the measurement surface 12.
Narrow surface 151 is disposed on the central angle side of the fan shape of the gripping surface 15. A pair of narrow face 151 is disposed at a distance between the pair of the wide surface 152 a distance less than (width) (width).
Coupling surface portion 153 connects the wide surface 152 and a narrow face 151. In the first embodiment, the connecting surface 153 extends perpendicular to the wide surface 152 and a narrow face 151.

Next, how to use the opening meter 10 of the first embodiment will be described.
To measure the amount of opening of the upper jaw 30 and lower jaw 20 with the aperture measuring apparatus 10 of the embodiment 1, first, as shown in FIG. 4, it is opened to the subject. Next, as shown in FIG. 5, the first reference tooth 21 in the lower jaw 20, the engaging portion 11 (specifically the opening meter 10, the notched as shown in Figure 2 and Figure 3 1 reference engage teeth abutment surface 111), in a state where the locking portion 11 is locked to the first reference tooth 21, the measurement surface 12 is brought into contact with the second reference tooth 31 in the upper jaw 30.
At this time, the closer to the surface (12) a second reference tooth 31 of the subject, mandibular lateral incisor 22 located on both sides of the first reference tooth 21 is easily brought into contact with the both sides of the first reference tooth contact surface 111 . When lower jaw incisors 22 comes into contact with both sides of the first reference tooth contact surface 111, since the first reference tooth contact surface 111 is the first reference tooth 21 would leave, the first reference tooth 21 first reference can not be locked stably engaged with the tooth contact surface 111.
However, in the embodiment 1, the concave surface 112 located on both sides of the first reference tooth contact surface 111 is recessed than the first reference tooth contact surface 111. Thus, when the closer the second reference tooth 31 on the surface (12), mandibular lateral incisor 22, the concave surface 112 located on both sides of the first reference tooth contact surface 111 hard contact. Therefore, it is possible to hermetically stably engaging the first reference tooth 21 to the first reference tooth contact surface 111. The first reference tooth 21, as shown in FIGS. 4 and 5, refers to the mandibular central incisors in the lower jaw 20. The second reference tooth 31, as shown in FIGS. 4 and 5, refers to the upper central incisor in the maxilla 30.

Next, as shown in FIG. 5, the locking portion 11 is engaged with the first reference tooth 21, and, being in contact with the measurement surface 12 to the second reference tooth 31, based on the first scale 13 Te, from the engaging portion 11, for measuring the distance in the measurement surface 12 to contact with the position of the second reference tooth 31. Accordingly, since it is allowed to stably supported the second reference tooth 31 of the upper jaw by the measurement surface 12, read accurately the position of the second reference tooth 31 on the surface (12). Therefore, it is possible to measure the opening amount with high accuracy.

Further, as shown in FIGS. 6 and 7, the locking portion 11 is engaged with the first reference tooth 21, and, being in contact with the measurement surface 12 to the second reference tooth 31, the second scale 14 based on, from the reference line 16, for measuring a distance to contact sites of the second reference tooth 31 which definitive measurement surface 12. At this time, as shown in FIG. 7, of the contact sites of the second reference tooth 31, for measuring a distance to between the second reference tooth 31 of the two. This makes it possible to measure the displacement of the side of the mandibular incisors during opening as the deviation of the median of the upper and lower incisors. In the case where this manner is measured, FIG. 6 shows that there is no displacement of the side of the mandibular incisors during opening, Figure 7 shows that there is a displacement of the side of the mandibular incisors during opening.

Further, engagement was locked to the locking portion 11 to the first reference tooth 21, and, while maintaining the state of being abutted against the measuring surface 12 to the second reference tooth 31, gradually opening the subject, the second scale 14 based on, for measuring the contact sites of the second reference tooth 31 which definitive measurement surface 12 in succession. Thus, the displacement of the side of the mandibular incisors during opening, it is possible to record continuously according to the opening amount, it is possible to figure out is opened while what motion.

According to the opening meter 10 of the first embodiment described above, the following effects.

The opening measuring device 10, a locking portion 11 to be engaged with the first reference tooth 21 in the lower jaw, the second reference tooth 31 in the upper jaw in a state where the locking portion 11 is locked to the first reference tooth 21 is brought the measurement surface 12 in contact, provided on the surface (12), configured to include a first scale 13 which indicates the distance from the engaging portion 11. Accordingly, since it is allowed to stably supported the second reference tooth 31 of the upper jaw by the measurement surface 12, read accurately the position of the second reference tooth 31 on the surface (12). Therefore, it is possible to measure the opening amount with high accuracy. Moreover, since the excellent measurement stability during and measurement accuracy, it is possible to obtain high reproducibility.

Disharmony occurs in mobility of right and left temporomandibular joint (e.g., if such forward sliding movement of one jaw joint is inhibited) and the lateral displacement of the opening slit may occur. Opening measuring instrument that has been used conventionally, specialized in function of measuring vertical incisor distance, the displacement of the side of which is the result of disharmony mobility of the right and left temporomandibular joint opening path opening degree It did not have the ability to properly measure according. Therefore, in the embodiment 1, the opening meter 10 is provided on the surface (12), configured to include a second scale 14 which indicates the position relative to the direction perpendicular to the direction in which the first scale 13 is provided. This makes it possible to measure the displacement of the side of the mandibular incisors during opening as the deviation of the median of the upper and lower incisors. Further, thereby, the displacement of the side of the mandibular incisors during opening, it is possible to record continuously in accordance with the opening amount, to grasp what kind are opened while the motion it can.

If the measurement surface 12 in the opening meter 10 was flat, when performing measurement, the subject's lips will hit the opening meter 10, hardly perform the measurement. Therefore, in the embodiment 1, an opening measuring instrument measuring surface 12 at 10, the measurement surface between the predetermined portion 121 of the engaging portion 11 measured surface, a predetermined portion of the engaging portion 11 measurement surface 121 It was constructed by bulging curved with respect to a plane F that connects and. Thus, in performing the measurement, since the subject's lips it does not hit the opening meter 10, easily perform the measurement.

If the measurement surface 12 in the opening meter 10 was flat, when measuring the displacement of the side of the mandibular incisors during opening, each opening amount is increased, the measurement surface 12 is opposite to the measurer since thus oriented, the measurer is difficult to visually recognize the second scale 14. Therefore, in the embodiment 1, the curved surface the curvature of the surface (12), and configured so as to be larger as the distance from the engaging portion 11. Thus, when measuring the displacement of the side of the mandibular incisors during opening, even if the opening amount is increased, the position where the second reference tooth in the measurement surface 12 abuts the opposite direction to the measurer since the orientation is difficult, measurement's easy to visually recognize the second scale 14.

The locking portion 11, a first reference tooth contact surface 111 of the first reference tooth 21 is in contact, it is recessed than the first reference tooth contact surface 111 on both sides of the first reference tooth contact surface 111 configured to include a concave surface 112. Thus, when brought into contact with the first reference tooth 21 to the first reference tooth contact surface 111, a lower jaw incisors 22 located on both sides of the first reference tooth 21 of the first reference tooth contact surface 111 It can hardly contact with the concave surface 112 located on both sides. Therefore, it is possible to accurately position the first reference tooth 21 on the locking portion 11 can be measured open amount more accurately.

The opening measuring device 10, configured to include a pair of gripping surfaces 15 that sandwich the measurement surface 12, a pair of gripping surfaces 15, narrower than the width of the direction in which the second scale 14 is provided in the surface (12) configured to include a narrow face 151 disposed in the width. Thus, measuring person, by having in hand the narrow face 151, so easily have opening meter 10, easily perform the measurement.

The following describes the opening measuring device 10A according to a different embodiment 2 from the first embodiment. The descriptions of the features common to the embodiment 1 will be omitted.

Opening instrument 10A, in addition to the configuration of the first embodiment described above, as shown in FIG. 8, further comprising a first horizontal surface 17, a third memory 171, the flange portion 18, and a notch 19 .

The first horizontal surface 17, as shown in FIG. 9, the first reference tooth 21 is provided on the surface abutting when measuring the forward sliding amount FD which will be described later. The first horizontal surface 17 is composed of a horizontal plane.

Third scale 171 is provided on the first horizontal surface 17. Third scale 171 displays the forward sliding amount FD. More specifically, in the second embodiment, the third memory 171, as shown in FIG. 8, and displays the distance to the tip of the flange portion 18. Forward sliding amount FD is for the second reference tooth 31 indicates the distance of the first reference tooth 21, the forward sliding amount FD is by forward sliding movement the lower jaw 20 to move back and forth relative to the maxilla 30, sliding distance forward it is the distance on. In opening measuring device 10A according to the second embodiment, the third memory 171, at intervals of 1 mm, are given.

Forward sliding amount FD, as shown in FIG. 9, the second reference tooth 31 is placed on the flange portion 18 to be described later, from the previous state to slide the lower jaw 20, the first reference tooth 21 first horizontal surface 17 while in contact with the, by sliding the lower jaw 20 forward, the first reference tooth 21 after sliding in the first horizontal plane 17 to measure the contact position. Then, determined by reading the mounting position of the second reference tooth 31 and the difference between the contact position of the first reference tooth 21. 9, the state of the lower jaw 20 of the front sliding shown by a dotted line in FIG. 9, showing the state of the lower jaw 20 after sliding a solid line in FIG.

The flange portion 18, the opening meter 10A, as shown in FIGS. 8 and 9 is provided in a portion for mounting the second reference tooth 31 when measuring the forward sliding amount FD. The flange portion 18 protrudes in a direction extending portion for mounting a second reference tooth 31 from the first horizontal surface 17. In opening instrument 10A, the flange portion 18 is 5mm projects. Thus, in the opening instrument 10A, since the flange portion 18 has a shape that protrudes, it is possible to place the second reference tooth 31 stable when measuring the forward sliding amount FD. As shown in FIG. 8, third scale 171 is being attached to the tip of the flange portion 18, FIG. 9, is omitted in the third memory 171 in the collar 18.

Notch 19, as shown in FIGS. 8 and 9, is arranged between the measurement surface 12 and the first horizontal surface 17. The notch 19, as shown in FIG. 9, when measuring the forward sliding amount FD, second the subject's upper lip is not hit the measuring surface 12 of the opening instrument 10A, and placed on the collar 18 composed of concave shape with respect to the measurement surface 12 so that the reference teeth 31 is fit.

According to the second embodiment described above, the following effects.

In opening meter 10A, and constitute a third scale 171 indicating the forward sliding amount FD of the first reference tooth 21 with respect to the second reference tooth 31. Thus, since it is possible to lower jaw 20 measures the how much forward gliding movement back and forth relative to the maxilla 30, the value of the forward sliding amount FD, in combination with the value of the amount of opening of the above, TMD it can be used to test for treatment.

The opening measuring device 10A, and further configured with a notch 19 which is recessed with respect to the measurement surface 12. Thus, when measuring the forward sliding amount FD, the upper lip does not touch the opening meter 10A, the second reference tooth 31 which is placed on the flange portion 18 fits in the notch 19. Further, the first reference tooth 21 collar 18 is sandwiched between the second reference tooth 31, opening instrument 10A is not able to move up and down during measurement. Therefore, the measurement is easily carried out, thereby enabling accurate measurement. Incidentally, the forward sliding amount FD can also be determined by the second reference tooth 31 is abutted against the distal end of the flange portion 18, thereby sliding the first reference tooth 21 forward. In this case, if read contact position of the first reference tooth 21 after sliding in the first horizontal plane 17, the front sliding amount FD intact.

While there has been explained a preferred embodiment of the aperture measuring apparatus of the present invention, the present invention is not intended to be limited to the embodiments described above, it can be appropriately changed.
For example, in the embodiments 1 and 2, the mandibular central incisor and the first reference tooth, performs the measurement of maxillary central incisor as a second reference tooth is not limited thereto. That is, the upper central incisor and the first reference tooth, as the second reference tooth a mandibular central incisor, engagement was locked to the locking portion to the first reference tooth, and is abutted against the measuring surface to the second reference tooth in the state, it can be based on the first scale or the second scale to measure the contact position of the second reference tooth 31 in the measurement plane 12. This makes it possible to measure the displacement in the opening amount and the side of the lower jaw incisors during opening.

Some of the subject is also present who mandible is displaced laterally in occlusion. Also in this case, according to the opening measuring instrument of the present invention, with reference to the position that is laterally displaced, the displacement of the lateral at the opening, i.e., the deviation amount to the side of the lower jaw opening path it can be measured.

In first and second embodiments, in the measurement plane 12, a predetermined portion 121 of the measuring surface, the second reference teeth 31 is configured such that all locations in contact with the time of measurement is not limited thereto. That is, in the measurement plane 12, a predetermined portion 121 of the measurement surface, the second reference tooth 31 may be configured such that one position abutting at the time of measurement.

In embodiments 1 and 2, a curved surface of curvature of the measurement surface 12 has been configured to be larger as the distance from the engaging portion 11 is not limited thereto. That is, the curved surface the curvature of the surface (12), in its entirety rather than configured to be larger as the distance from the engaging portion 11, be configured such that a part becomes larger as the distance from the engaging portion 11 good.

In embodiments 1 and 2, a concave surface 112 has been configured to be recessed than the first reference tooth contact surface 111 on both sides of the first reference tooth contact surface 111 is not limited thereto. That is, a concave 112 may be configured to also be recessed form than the first reference tooth contact surface 111 at at least one side of the first reference tooth contact surface 111.

The material of the first and second embodiments is not particularly limited, for example, in addition to various synthetic resins may be composed of a metallic material or the like.

In Embodiments 1 and 2, the first scale 13, 10 mm spacing, or have been labeled with 5mm intervals, not limited to this. That, 1 mm spacing, 2 mm spacing, etc., may be set apart subjecting an appropriate scale according to the purpose. For example, the first scale 13 and all 1mm intervals, the scale provided at 1mm intervals in the reference line 16, can be assigned the value of the scale to 5mm each for each of the first scale 13 and reference line 16.
The distance provided width and a second scale of the second scale is not limited, may be set appropriately according to the object.

In the second embodiment, provided with a third scale 171 to the first horizontal surface 17 is not limited to this. To measure the forward sliding amount FD is opening meter, first reference tooth 21 in a state where the second reference tooth 31 is in contact with the opening instrument comprises a contactable surface, a first reference tooth 21 There are contactable surface is horizontal, and need only be slide configured to be able to lower jaw 20 forward in abutting contact with the first reference tooth 21 on the can abut surface. For example, shown in FIG. 8, it is disposed in the locking portion 11 side of the wide surface 152 may be a third scale 171 provided on the second horizontal surface 113 constituted by a horizontal plane, or a portion of the measurement surface 12 If the configured in a horizontal plane, the may be provided a third memory 171 to the horizontal portion of the surface (12). In this case, the second reference tooth 31 on one end side of the horizontal portion of the engaging portion 11 side or surface (12) of the second horizontal surface 113 is in contact, the horizontal portion of the surface (12) the first reference tooth 21 and the second horizontal surface is brought into contact with 113 be to slide the lower jaw 20 forward while, it is possible to measure the forward sliding amount FD. Thus, when the third scale 171 provided on the horizontal portion of the second horizontal surface 113 or surface (12), third scale 171, the second reference tooth 31 in the horizontal portion of the second horizontal surface 113 or surface (12) those It is provided to display the distance to the position to contact.

In Embodiment 2, the third memory 171 is provided at 1mm intervals, not particularly limited, and may be set appropriately according to the object.

In the second embodiment, is constituted of the flange portion 18 so as to 5mm protruding not particularly limited thereto, for example, it may constitute a collar 18 to 1 ~ 10 mm protruding, or so as not to protrude configuration may be.
Further, the flange portion 18, the horizontal plane of the upper jaw 30 of incisor incisal hits, it is also possible to add similar scale to the second scale 14. Thus, the left and right at the front sliding swing (lateral displacement) also can be measured.

10 opening meter 10A opening meter 11 engaging portion 111 first reference tooth contact surface 112 concave 113 second horizontal surface 12 a predetermined portion 13 first graduation 14 second scale 15 gripping surface 151 width of the measurement plane 121 the measurement plane narrow surface 152 wide face 153 connecting face 16 reference line 17 first horizontal surface 171 third scale 18 flange portion 19 notch 20 the lower jaw 21 first reference tooth 22 mandibular lateral incisor 30 maxillary 31 second reference tooth LD circumferential direction WD width direction F planar FD forward sliding amount

Claims (7)

  1. An opening measuring device for measuring the amount of opening of the upper and lower jaws,
    A securing portion secured to the first reference teeth in one jaw,
    A measurement plane second reference tooth contact in the other jaw in a state in which the locking portion is engaged with the first reference tooth,
    Wherein provided on the measurement surface, an opening measuring device comprising: a first scale showing the distance from the locking portion.
  2. Wherein provided on the measurement surface, an opening measuring instrument according to claim 1, further comprising a second scale indicating the position related to the direction orthogonal to the direction in which the first scale is provided.
  3. Opening measuring instrument according to claim 1 or 2 further comprising a third scale showing the front sliding amount of the first reference tooth for said second reference tooth.
  4. The measurement surface, the measurement surface between the position away from the locking portion of the measuring surface and the locking portion is inflated to a plane connecting the said position of the measuring surface and the locking portion opening measuring instrument according to any one of constituted claims 1 to 3 by the curved surface.
  5. Curvature of the curved surface, opening measuring instrument according to claim 4 having a larger moiety as the distance from the locking portion.
  6. The locking portion is,
    A first reference tooth contact surface to which the first reference tooth abuts,
    Opening measuring instrument according to any one of claims 1 to 5 and a concave surface which is recessed than the first reference tooth contact surface at least on one side of the first reference tooth contact surface.
  7. Further comprising a pair of gripping surfaces that sandwich the measurement surface,
    It said pair of gripping surfaces,
    Opening measuring instrument according to any one of claims 1 to 6, comprising a narrow face that is disposed at a narrower width than that of the second direction graduations are provided on the measuring surface.
PCT/JP2014/072764 2013-08-30 2014-08-29 Opening measurement instrument WO2015030185A1 (en)

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JP2013180390 2013-08-30
JP2013-180390 2013-08-30

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Application Number Priority Date Filing Date Title
EP20140840885 EP3040049A4 (en) 2013-08-30 2014-08-29 Opening measurement instrument
JP2015534334A JP6391119B2 (en) 2013-08-30 2014-08-29 Opening instrument

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ES2440516T3 (en) 2008-08-15 2014-01-29 Otis Elevator Company Elevator system comprising a load bearing with nanometric flame retardant and corresponding method of manufacturing said supporting load

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US4997368A (en) * 1990-03-12 1991-03-05 Mayer Norman M Oral measuring device
US5158096A (en) * 1991-04-16 1992-10-27 The Regents Of The University Of California Orthopedic measurement device and methodology to quantitatively and simultaneously measure distance and force during a passive stretching of the mandible
US5361506A (en) * 1991-12-19 1994-11-08 Therabite Corporation Jaw opening measurement device
JP2004329431A (en) * 2003-05-02 2004-11-25 Yoko Wakasugi Lower jaw position measurer
JP3150439U (en) * 2009-02-13 2009-05-21 清水 敦 Measurement instrument of dental oral
JP5004291B2 (en) 2007-11-22 2012-08-22 石塚 昌宏 Opening training device
GB2494232A (en) * 2011-08-30 2013-03-06 Kapitex Healthcare Ltd A device and method for measuring and improving a person's bite

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DE3840350C1 (en) * 1988-11-30 1990-04-12 Girrbach Dental Gmbh, 7530 Pforzheim, De

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Publication number Priority date Publication date Assignee Title
US4997368A (en) * 1990-03-12 1991-03-05 Mayer Norman M Oral measuring device
US5158096A (en) * 1991-04-16 1992-10-27 The Regents Of The University Of California Orthopedic measurement device and methodology to quantitatively and simultaneously measure distance and force during a passive stretching of the mandible
US5361506A (en) * 1991-12-19 1994-11-08 Therabite Corporation Jaw opening measurement device
JP2004329431A (en) * 2003-05-02 2004-11-25 Yoko Wakasugi Lower jaw position measurer
JP5004291B2 (en) 2007-11-22 2012-08-22 石塚 昌宏 Opening training device
JP3150439U (en) * 2009-02-13 2009-05-21 清水 敦 Measurement instrument of dental oral
GB2494232A (en) * 2011-08-30 2013-03-06 Kapitex Healthcare Ltd A device and method for measuring and improving a person's bite

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EP3040049A4 (en) 2016-10-19 application
EP3040049A1 (en) 2016-07-06 application
JP6391119B2 (en) 2018-09-19 grant
JPWO2015030185A1 (en) 2017-03-02 application

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